Giant enhancement of optical nonlinearity in two-dimensional materials by multiphoton-excitation resonance energy transfer from quantum dots

Hao Hong, Chunchun Wu, Zixun Zhao, Yonggang Zuo, Jinhuan Wang, Can Liu, Jin Zhang, Fangfang Wang, Jiangang Feng, Huaibin Shen, Jianbo Yin, Yuchen Wu, Yun Zhao, Kehai Liu, Peng Gao, Sheng Meng, Shiwei Wu, Zhipei Sun, Kaihui Liu^*, Jie Xiong^*